## anonymous one year ago Solve x^2 = 144 72 12 ±12 −12

1. ♪Chibiterasu

Do you mean x^2?

2. anonymous

yeas sry

3. ♪Chibiterasu

Just find the square root of both sides. $\sqrt{144}$

4. anonymous

-12 and 12

5. ♪Chibiterasu

Yeah.

6. anonymous

7. anonymous

right?

8. anonymous

it is C?

9. ♪Chibiterasu

There's a symbol that represents both positive and negative, since a negative times a negative is a positive which is the same vice versa.

10. ♪Chibiterasu

Yeah.

11. anonymous

ok THX

12. ♪Chibiterasu

That sign just means "this number is positive and negative" which is two solutions in one.